Ok so I’m in quite an abusive relationship I am working I have 4 kids but I want out

Only problem is itl mean leaving my job as no one for childcare

I’m worried as I have an IVA I’ve set up to clear my debts and get straight but if I go this alone and can’t work till find suitable employment around kids then what would I be entitled to? As from what I can see for bills etc it’d be income support etc and won’t be much? I’ve always always worked I just need suitable job